2021 New York Laws
CPL - Criminal Procedure
Part 3 - Special Proceedings and Miscellaneous Procedures
Title P - Procedures for Securing Attendance at Criminal Actions and Proceedings of Defendants and Witnesses Under Control of Court--Recognizance, Bail
Article 510 - Recognizance, Bail and Commitment-Determination of Application for Recognizance or Bail, Issuance of Securing Orders, and Related Matters
510.15 - Commitment of Principal Under Seventeen or Eighteen.

§ 510.15 Commitment of principal under seventeen or eighteen.
1.  When  a  principal who is under the age of sixteen is committed to
  the custody of the sheriff the court must direct that the  principal  be
  taken  to  and lodged in a place certified by the office of children and
  family services as a juvenile detention facility for  the  reception  of
  children.    When  a  principal  who  (a)  commencing October first, two
  thousand eighteen, is sixteen years of age; or  (b)  commencing  October
  first,  two  thousand nineteen, is sixteen or seventeen years of age, is
  committed to the custody of the sheriff, the court must direct that  the
  principal  be  taken to and lodged in a place certified by the office of
  children and family services in conjunction with the state commission of
  correction as a specialized secure juvenile detention facility for older
  youth.  Where such a direction is made the  sheriff  shall  deliver  the
  principal  in accordance therewith and such person shall although lodged
  and cared for in a juvenile detention facility continue to be deemed  to
  be  in  the custody of the sheriff. No principal under the age specified
  to whom the provisions of this section may apply shall  be  detained  in
  any  prison, jail, lockup, or other place used for adults convicted of a
  crime or under arrest and charged with the commission of a crime without
  the approval of the office of children and family services  which  shall
  consult  with  the  commission of correction if the principal is sixteen
  years of age or older in the case of each principal and the statement of
  its reasons therefor. The sheriff shall not be liable for any acts  done
  to  or  by  such principal resulting from negligence in the detention of
  and care for such principal, when the principal is  not  in  the  actual
  custody of the sheriff.
2.  Except  upon  consent of the defendant or for good cause shown, in
  any case in which a  new  securing  order  is  issued  for  a  principal
  previously  committed  to  the  custody  of the sheriff pursuant to this
  section, such order shall further direct  the  sheriff  to  deliver  the
  principal  from  a  juvenile  detention  facility to the person or place
  specified in the order.